Progressive Library Organizations Update, 2013-2017

This article is a five-year update to the author’s book, Progressive Library Organizations: A Worldwide History, published by McFarland in 2015. It includes information on all the organizations covered in the book except the Library and Information Workers Organisation of South Africa which folded in 2000. These six organizations are from Austria, Germany, Sweden, UK, and US. The analysis is based on several new interviews in 2017, documents, publications, correspondence, and much personal experience. These organizations are in various states of health, and two of them have transformed into new structures. We can take heart that activist librarians continue to organize themselves to push back against the neoliberalism that pervades our profession and the world at-large

Progressive Library Organizations Update, 2013-2017

This article is a five-year update to the author’s book, Progressive Library Organizations: A Worldwide History, published by McFarland in 2015. It includes information on all the organizations covered in the book except the Library and Information Workers Organisation of South Africa which folded in 2000. These six organizations are from Austria, Germany, Sweden, UK, and US. The analysis is based on several new interviews in 2017, documents, publications, correspondence, and much personal experience. These organizations are in various states of health, and two of them have transformed into new structures. We can take heart that activist librarians continue to organize themselves to push back against the neoliberalism that pervades our profession and the world at-large

Progressive Library Organizations Update, 2013-2017

This article is a five-year update to the author’s book, Progressive Library Organizations: A Worldwide History, published by McFarland in 2015. It includes information on all the organizations covered in the book except the Library and Information Workers Organisation of South Africa which folded in 2000. These six organizations are from Austria, Germany, Sweden, UK, and US. The analysis is based on several new interviews in 2017, documents, publications, correspondence, and much personal experience. These organizations are in various states of health, and two of them have transformed into new structures. We can take heart that activist librarians continue to organize themselves to push back against the neoliberalism that pervades our profession and the world at-large

Less Minimal Flavour Violation

We consider the approximate U(2)^3 flavour symmetry exhibited by the quark sector of the Standard Model and all its possible breaking terms appearing in the quark Yukawa couplings. Taking an Effective Field Theory point of view, we determine the current bounds on these parameters, assumed to control the breaking of flavour in a generic extension of the Standard Model at a reference scale Lambda. In particular, a significant bound from epsilon'/epsilon is derived, which is relevant to Minimal Flavour Violation as well. In the up-quark sector, the recently observed CP violation in D -> pi+ pi-, K+ K- decays might be accounted for in this generic framework, consistently with any other constraint.Comment: 15 pages, 1 figur

Bis(2,6-diamino-3,5-dibromo­pyridinium) hexa­bromidostannate(IV)

The asymmetric unit of the title compound, (C5H6Br2N3)2[SnBr6], contains one cation and one half-anion in which the Sn atom is located on a crystallographic centre of inversion and is in a quasi-octa­hedral geometry. The crystal structure is assembled via hydrogen-bonding inter­actions of two kinds, N(pyridine/amine)—H⋯Br—Sn, along with C—Br⋯Br—Sn interactions [3.4925 (19) Å]. The cations are involved in π–π stacking, which adds an extra supra­molecularity as it presents a strong case of offset-face-to-face motifs [centroid–centroid distance = 3.577 (3) Å]. The inter­molecular hydrogen bonds, short Br⋯Br inter­actions and π–π stacking result in the formation of a three-dimensional supra­molecular architecture

The transverse breathing mode of an elongated Bose-Einstein condensate

We study experimentally the transverse monopole mode of an elongated rubidium condensate. Due to the scaling invariance of the non-linear Schr\"odinger (Gross-Pitaevski) equation, the oscillation is monochromatic and sinusoidal at short times, even under strong excitation. For ultra-low temperatures, the quality factor $Q=\omega_0/\gamma_0$ can exceed 2000, where $\omega_0$ and $\gamma_0$ are the mode angular frequency and damping rate. This value is much larger than any previously reported for other eigenmodes of a condensate. We also present the temperature variation of $\omega_0$ and $\gamma_0$.Comment: 4 pages, 4 figures, submitted to PR

Bis(2-bromo­pyridinium) hexa­bromido­stannate(IV)

The asymmetric unit of the title compound, (C5H5BrN)2[SnBr6], contains one cation and one half-anion. The [SnBr6]2− anion is located on an inversion center and forms a quasi-regular octa­hedral arrangement. The crystal structure consists of two-dimensional supra­molecular layers assembled via hydrogen-bonding inter­actions of N—H⋯Br—Sn [D⋯A = 3.375 (13)–3.562 (13) Å and D—H⋯A = 127–142°, along with C—Br⋯Br synthons [3.667 (2) and 3.778 (3) Å]. These layers are parallel to the bc plane and built up from anions inter­acting extensively with the six surrounding cations

Interpreting Soft Sediment Deformation and Mass Transport Deposits as Seismites in the Dead Sea Depocenter

Peer reviewedPublisher PD

Dynamics of a classical gas including dissipative and mean field effects

By means of a scaling ansatz, we investigate an approximated solution of the Boltzmann-Vlasov equation for a classical gas. Within this framework, we derive the frequencies and the damping of the collective oscillations of a harmonically trapped gas and we investigate its expansion after release of the trap. The method is well suited to studying the collisional effects taking place in the system and in particular to discussing the crossover between the hydrodynamic and the collisionless regimes. An explicit link between the relaxation times relevant for the damping of the collective oscillations and for the expansion is established.Comment: 4 pages, 1 figur